Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bison.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 03:44:16 UTC · ↺ Refresh
MX Hostnames
- bison-com.mail.protection.outlook.com
MX Priorities
- bison-com.mail.protection.outlook.com: 1
A / AAAA Records
- 13.33.252.89 ↩ server-13-33-252-89.jfk50.r.cloudfront.net
- 13.33.252.22 ↩ server-13-33-252-22.jfk50.r.cloudfront.net
- 13.33.252.128 ↩ server-13-33-252-128.jfk50.r.cloudfront.net
- 13.33.252.93 ↩ server-13-33-252-93.jfk50.r.cloudfront.net
- 2600:9000:2141:4e00::7441:9080:93a1
- 2600:9000:2141:d800::7441:9080:93a1
- 2600:9000:2141:e000::7441:9080:93a1
- 2600:9000:2141:200::7441:9080:93a1
- 2600:9000:2141:aa00::7441:9080:93a1
- 2600:9000:2141:1c00::7441:9080:93a1
- 2600:9000:2141:3600::7441:9080:93a1
- 2600:9000:2141:3c00::7441:9080:93a1
CNAME → d23mxwl4j2bdc2.cloudfront.net
Mail Server IPs
- 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
- 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1500.awsdns-59.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1500.awsdns-59.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1899.awsdns-45.co.uk
ns-779.awsdns-33.net
ns-1500.awsdns-59.org
ns-173.awsdns-21.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms22406755
- SPFv=spf1 include:spf.protection.outlook.com -all
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